theme/chameleon/ui/ChameleonCSS.class.php

   1 <?php
   2
   3 class ChameleonCSS {
   4     var $error;
   5     var $base;
   6
   7     var $perm;
   8     var $temp;
   9
  10     function ChameleonCSS($base, $perm, $temp) {
  11         $this->base = $base;
  12         $this->perm = $perm;
  13         $this->temp = $temp;
  14     }
  15
  16     function update($file, $content = '') {
  17         if (!is_writable($this->base . $this->$file)) {
  18             $this->error = $this->$file . ' is not writeable, the file permissions are currently ' . $this->getfilepermissions($this->$file);
  19             return false;
  20         }
  21
  22         if (!$fp = fopen($this->base . $this->$file, 'w')) {
  23             $this->error = 'couldn\'t open file';
  24             return false;
  25         }
  26         fwrite($fp, stripslashes($content));
  27         fclose($fp);
  28         return true;
  29     }
  30
  31     function getfilepermissions($file) {
  32         return substr(sprintf('%o', fileperms($this->base . $file)), -4);
  33     }
  34
  35     function read() {
  36         $permcss = file_get_contents($this->base . $this->perm);
  37         $tempcss = file_get_contents($this->base . $this->temp);
  38
  39         if ($permcss === false || $tempcss === false) {
  40             $this->error = 'Couldn\'t read file';
  41             return false;
  42         }
  43
  44         $permcss = trim($permcss);
  45         $tempcss = trim($tempcss);
  46
  47         if ($tempcss == '') {
  48             return $permcss;
  49         }
  50         return $this->_merge($permcss, $tempcss);
  51     }
  52
  53
  54
  55
  56     function _merge($permcss, $tempcss) {
  57         $csssrcs = array($this->_toobj($permcss), $this->_toobj($tempcss));
  58
  59         $merged = array();
  60
  61         for ($i = 0; $i < 2; ++$i) {
  62             foreach ($csssrcs[$i] as $sel => $rule) {
  63                 $newsel = false;
  64                 if (!isset($merged[$sel])) {
  65                     $merged[$sel] = array();
  66                     $newsel = true;
  67                 }
  68                 foreach ($rule as $prop => $value) {
  69                     $merged[$sel][$prop] = $value;
  70                 }
  71                 if ($i > 0 && !$newsel) {
  72                     foreach ($merged[$sel] as $prop => $value) {
  73                         if (!isset($csssrcs[$i][$sel][$prop])) {
  74                             unset($merged[$sel][$prop]);
  75                         }
  76                     }
  77                 }
  78             }
  79             if ($i > 0) {
  80                 foreach ($merged as $sel => $value) {
  81                     if (!isset($csssrcs[$i][$sel])) {
  82                         unset($merged[$sel]);
  83                     }
  84                 }
  85             }
  86         }
  87
  88         return $this->_tostr($merged);
  89     }
  90
  91
  92
  93
  94     function _toobj($cssstr) {
  95         $cssobj = array();
  96         $end = strpos($cssstr, '}');
  97         while ($end !== false) {
  98             $currule = substr($cssstr, 0, $end);
  99             $parts = explode('{', $currule);
 100             $selector = trim($parts[0]);
 101             $rules = trim($parts[1]);
 102             $rulesarr = explode(';', $rules);
 103
 104             $num = count($rulesarr);
 105             for ($i = 0; $i < $num; ++$i) {
 106                 if (strpos($rulesarr[$i], ':') === false) {
 107                     break;
 108                 }
 109                 $rule = explode(':', $rulesarr[$i]);
 110                 $prop = trim($rule[0]);
 111                 $value = trim($rule[1]);
 112
 113                 if (!isset($cssobj[$selector])) {
 114                     $cssobj[$selector] = array();
 115                 }
 116                 $cssobj[$selector][$prop] = $value;
 117             }
 118             $cssstr = substr($cssstr, $end + 1);
 119             $end = strpos($cssstr, '}');
 120         }
 121         return $cssobj;
 122     }
 123
 124
 125     function _tostr($cssobj) {
 126         $cssstr = '';
 127         foreach ($cssobj as $sel => $rule) {
 128             $cssstr .= "$sel {\n";
 129             foreach ($rule as $prop => $value) {
 130                 $cssstr .= "  $prop: $value;\n";
 131             }
 132             $cssstr .= "}\n";
 133         }
 134         return $cssstr;
 135     }
 136 }
 137
 138
 139 ?>